Pictorial Data Management Based Upon the Theory of Symbolic Projections Chang Shi-Kuo · Jungert Erland University of Pittsburgh 1992-02
Americans and civil defense : some highlights of the 1972 national survey Nehnevajsa J University of Pittsburgh 1972-04
Civil defense and planning for urban change : A pre-study of possible linkages Rosenberg D B University of Pittsburgh 1971-10 Öppna sammanfattning